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CARDIOLOGISTS AT WASHINGTON HOSPITAL CENTER LEAD INVESTIGATION WITH INNOVATIVE LASER CATHETER

 CARDIOLOGISTS AT WASHINGTON HOSPITAL CENTER LEAD INVESTIGATION
 WITH INNOVATIVE LASER CATHETER
 IRVINE, Calif., Nov. 10 /PRNewswire/ -- Over the past 12 months, Irvine-based Advanced Interventional Systems (NASDAQ: LAIS), in a cooperative effort with interventional cardiologists at three medical centers in the United States, has made significant advances in development of a new excimer laser catheter for treating heart disease patients with total coronary occlusions not treatable by conventional balloon angioplasty. This new laser catheter resembles a .020-inch guidewire but in fact is composed of lasing fibers. In addition, it features a physician-controlled tip deflection capability.
 The company's Chairman and Chief Executive Officer, Robert E. Wall, said this new catheter, the ENTERPRISE laser catheter system, recently was approved by the federal Food and Drug Administration for initial clinical studies in the United States. The three investigational test centers are: The Washington Hospital Center in Washington D.C. (principal investigators: Martin B. Leon, M.D., Kenneth M. Kent, M.D., and Augusto Pichard, M.D.), Cedars-Sinai Hospital, Los Angeles (principal investigators: Frank Litvack, M.D. and Neil Eigler, M.D.), and St. Vincent Hospital, Indianapolis (principal investigator: Donald Rothbaum, M.D.).
 Thus far, 11 patients with total coronary occlusions unsuitable for treatment with conventional balloon angioplasty have been treated using the new ENTERPRISE laser catheter system manufactured by Advanced Interventional Systems. Successful treatment was achieved utilizing the new laser catheter in seven of 11 patients, followed by either additional over-the-wire laser atherectomy using conventional laser catheters that traverse a guidewire, or adjunctive balloon angioplasty. No major complications have been reported.
 Prior to the development of this total occlusion catheter, the only treatment alternatives for patients with total coronary occlusions not amenable to balloon angioplasty were medication or bypass surgery.
 The unique feature of the LAIS' ENTERPRISE catheter is its tip deflection capability which enables this catheter to successfully navigate through coronary arteries without the assistance of a guidewire, according to Wall.
 Seven of the 11 cases completed, to date, were performed at the Washington Hospital Center by Drs. Leon, Kent, Pichard and co- workers.
 According to Dr. Martin Leon, director of the Investigational Angioplasty Program at Washington Hospital, this innovative laser catheter for total occlusions has the potential to further increase the number of heart disease patients who can be successfully treated with laser atherectomy rather than bypass surgery. Today, one of the most common reasons patients are not considered for angioplasty and referred to bypass surgery is untreatable total occlusion.
 A preliminary report of the total occlusion cases performed at Washington Hospital Center, Cedars-Sinai Hospital, and St. Vincent Hospital will be reported on Thursday, Nov. 19, 1992, at the upcoming American Heart Association Scientific Sessions in New Orleans.
 -0- 11/10/92
 /CONTACT: Connie McCluskey, director-corporate communications of Advanced Interventional Systems, 714-586-1342 or 714-581-8510, ext. 234/
 (LAIS) CO: Advanced Interventional Systems ST: California IN: MTC SU:


JB-LS -- LA010 -- 9108 11/10/92 09:12 EST
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Publication:PR Newswire
Date:Nov 10, 1992
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